Apparatus for treating garbage.



. A. J. MORSE. APPARATUS FOR TREATING GARBAGE.

Y APPIQIOATION rung) APR; 26, 1965.

Patented Jan. 19, 1909.

- WHWMH s w m Witness dent of Baltimore city, State UNITED srarns ALBRO J. MORSE, or BALTIMORE,

MARYLAND.

APPARATUS FOR TREATING- GARBAGE.

Specification of Letters Patent. Application filed April 26, 1905.

Patented Jan. 19, 1909. Serial No. 257,517.

To all whom it may concern:

Be it known that I, ALBRO J. Monsn, a citizen of the United States of America, and resiof Maryland, have invented certain new and useful Improvements in Apparatus for Treating Garbage, of which the following is a specification.

My invention relates to certain new and useful improvements in a method and apparatus for treating garbage and the like.

The object of my invention is to reduce garbage or like material which requires digesting or rendering. Bymy method and apparatus, the digesting can be' completed more quickly, more ehiciently and with a greater saving in cost of fuel than has heretofore been possible.

With these objects in view, my invention consistsin the treating garbage or the like which consists in placing the same in a jacketed digester passing superheated steam at hlgh temperature and low pressure through the j ac et of the digester and agitatin the digester.

My invention also consistsin a rotary digester provided with a jacket introducing superheated steam at high temperature and low pressure into a jacket while the digester is being rotated.

My invention also consists in certain details of construction and combination of parts, the which will be first described and then the in vention particularly pointed out in the claims.

Referring, to the drawings wherein I show the preferred form of my apparatus, ,Figure 1 is a diagrammatic vi \v showing as much of -a plant as is necessary to understand the invention Fig. 2 is a detail sectional view of one end of the digester showing the connections therewith. ,Fig. 3 is a similar view showing the other end of the digester.

1 designates the boiler of any desired construct 'n and 2a superheater, 3 is a steam pipe leading from the boiler'to the superheating coil 4 in the supcrheater.

5 is a pipe leading from the superheating coil to the digester 6. The digester is composed of an outer shell 7 provided with the heads 8 and 9 and an inner shell 10 which is provided with the heads 11 and 12. The inner shell is supported by suitable means within the outer shell so as to stand in the center thereof.

and means for l preferred form of construction of j 13 are man-holes which extend into the inner shell in order to give access to the inner i shell for the filling ol' the inner shell with the material which is to bedigested and there- I moval of the material therefrom.

14 is a stufiing box provided in the head 9 the outer shell and in this stuliing box is I mounted a pipe 15 which at its inner end is provided with a ring 16. To the free end of this pipe is connected a coupling 17 which connects the end of the steam pipe 5'with the I pipe 15, whereby superheated-steamcan pass- 1 from the superheater through digester.

1S 1s a pipe which extends through the 1 opening in one side of the coupling 17 and is bent at right angles passing 1 portion of the pipe 15 and into the outer shell between the head 9 i This pipe then turns down so that its open I end extends down to nearly the lower portion l of the outer shell. The other end of this pipe is connected to a'steam trap 19. By this construction, it will be seen that the water of condensation which forms in the'outer shell i will be drawn on by this pipe and the trap in the usual manner. It it ill also be observed that bythastufiirig box construction shown and described, the pipes 15, 18 and 5 remain stationary and the digester may revolve, the stuiiing box allowing this without the escape of, steam. At the other end .of the digester from that which is provided with the construction shown in Fig. 1, is a construction shown in Fig. 3, in which 20is-a pipe passing through I a stuiiiing box 21 in the outer shell and into i the inner shell. At the inner end, the pipe is provided with a T-head 22 which has extending upwardly from one end thereof the open pipe 23 and at the other end of the I T-head, I preferably provide a 24. Connected to the outer end of the pipe 20 is a pipe 25 which leads to a suitable condenser, not shown. By this construction, all vapors which form in the inner shell are drawn off from the digester and condensed. 1 By this construction, the material to be digested may be digested under as little pressure as desired. By having the pipe 23'exj tending to the upper portion of the shell as shown, the liability of material dropping i into .thepine is minimized and should any i material so pass in, it will immediately pass l through the perforated disk 24. l Preferably, I connect the pipe 25 to the and the head .12.

perforated disk tion, when the v the T-head 22.

pipe 20 by a T-head 26. Through this T- ead, pass a suitable thermostat 27, the thermostat closing the open end of the T- head and passing into the pipe 20 nearly to This thermostat is connected by a pipe 28 to the valve 29 located in the main steam pipe 5, whereby the amount of steam supplied to the outer shell will be controlled by the temperature in the inner shell and by properly adjusting the thermostat,-

any desired temperature may be maintained within the inner shell.

for the digester and "passes through the superheater where it may be superheated to any desired tem erature up to eight to nine hundred degrees if such a temperature should be found desirable.

maintaining a low pressure in the boiler 1 iifll'fiild because of the circulation of steam through the superheater, this high temperature of the superheater steam is obtained suitable safety valve may be digester order terial in the digester,

without materially increasing the pressure of the'steam. The steam then passes through the superheater and through the pipes 5 and 15 into the other shell of the digester.

provided in the to prevent the pressure therein from risingto more than 1,0.or 15 pounds, The digester being rotated keeps the material therein in constant agitation and evenly and quicklydigests the whole mass. The steam which condenses passes out through the pipe 18 and may be trapped at 19 in order to prevent t'oo rapid flow of steam andmaintain the desired pressure in the jacket. The vapors which are given ofl by the material being digested are carried away by the pipe 25 to a suitable condenser. these vapors, when they enter in the section 20 to which the pipe 25 is connected, are practically of the temperature of the mathethermostatic valve will operate to keep the material in the digester at any esired temperature which should not be sufficiently high to carbonize the grease or volatilize the nitrogen contained in the material.

By the use of low ressure su erheated steam in the manner escribed, t e use of stay-bolts to connect the inner and outer shells of the digester is entirely done away with, which largely reduces the cost of the digester. Inadditlon to this, because of the low ressure the apparatus can be used for a muc longer time, since the acids contained in the material being digested eats away the ,iron or steel from which the digesters are made and since they pressure will last much longer than the ordiare subject to a low.

nary form of digester in which high pressure is used.

It'will be evident that the apparatus described in this application is equally well adapted as a drier and that material to be dried may be laced in the inner shell and rapidly and e ciently tem erature of the superheated steam being regu ated to produce the desired result an the condenser operating to carry the mois'-- ture and vapors as given 'ofi the material being dried. by the use of this digester, no water is added to the material eration, and consequently, the' operation can be carried on more rapldly than when the steam is passed directly through the material dried if desired, the

It is to be further noted that to be digested during the op- I to be digested which adds a large percentage of water to the material.

While I have described the preferred form of my invention, I desire to have it understood thanmany changes maybe made therein wi hout dep arting from the spirit thereof.

Having fully described my invention what I claim as new and desire to secure by Letters Patent is 1. In an apparatus for treatin material, the combination with a jackete tank, of means for superheating steam at low pressure and introducing the same in the jacket of the tank, means'for rotating the tank to agitate the material therein and means for withdrawing from the tank the moisture givenoifby the material. V 2. In an apparatus for treating1 material, the combination with a jackete tank, of meansfor superheating steam at low pressure and introducing the same inlthe jacket Signed by me at Washington, District of Columb'a, this 25th day of April 1905.

:ALBRQ J. MORSE.

Witnesses: I E. E. WARrrELn,

FRANCIS M. PHELPS. 

